package com.example.demospringsecurity.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

  private Jackson2JsonRedisSerializer<Object> serializer() {
    // 使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
    Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
    ObjectMapper objectMapper = new ObjectMapper();

    // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
    objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);

    // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
    objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL);

    jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
    return jackson2JsonRedisSerializer;
  }

  @Bean
  public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(redisConnectionFactory);
    // 用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
    redisTemplate.setValueSerializer(serializer());

    StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
    // 使用StringRedisSerializer来序列化和反序列化redis的key值
    redisTemplate.setKeySerializer(stringRedisSerializer);

    // hash的key也采用String的序列化方式
    redisTemplate.setHashKeySerializer(stringRedisSerializer);
    // hash的value序列化方式采用jackson
    redisTemplate.setHashValueSerializer(serializer());
    redisTemplate.afterPropertiesSet();
    return redisTemplate;
  }

}